UDN2981A

8-Channel Source Drivers
2981 and
2982
7
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
A Package, 18-Pin DIP
5.33 MAX
0.46 ±0.12
22.86 ±0.51
6.35
+0.76
–0.25
3.30
+0.51
–0.38
10.92
+0.38
–0.25
1.52
+0.25
–0.38
7.62
2.54
0.25
+0.10
–0.05
C
SEATING
PLANE
21
18
A
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
A
Terminal #1 mark area
All dimensions nominal, not for tooling use
(reference JEDEC MS-001 AC)
Dimensions in inches
LW Package, 20-Pin SOICW
21
20
21
20
A
2.65 MAX
C
SEATING
PLANE
C0.10
20X
A
Terminal #1 mark area
GAUGE PLANE
SEATING PLANE
B
2.25
0.65
9.50
1.27
PCB Layout Reference View
For Reference Only
Dimensions in millimeters
(Reference JEDEC MS-013 AC)
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
B
Reference pad layout (reference IPC SOIC127P1030X265-20M)
All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary
to meet application process requirements and PCB layout tolerances
1.27
0.25
0.20 ±0.10
0.41 ±0.10
12.80±0.20
10.30±0.33
7.50±0.10
4° ±4
0.27
+0.07
–0.06
0.84
+0.44
–0.43
8-Channel Source Drivers
2981 and
2982
8
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Copyright ©1977-2011, Allegro MicroSystems, Inc.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail speci cations as may be required to permit
improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the
information being relied upon is current.
Allegro’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the
failure of that life support device or system, or to affect the safety or effectiveness of that device or system.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use;
nor for any infringement of patents or other rights of third parties which may result from its use.
For the latest version of this document, visit our website:
www.allegromicro.com
Revision History
Revision Revision Date Description of Revision
Rev. T Januray 30, 2012 Update product availability

UDN2981A

Mfr. #:
Manufacturer:
Description:
IC SOURCE DRIVER 8CHAN 18DIP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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